Quote Originally Posted by x-built-Stan View Post
Xray,

Are you using two bridge straps? When I put my cards (2) in SLI, I originally only had 1 bridge strap installed. After I got lousy 3DMark scores, I checked the MSI manual and diagram showed 2 straps. Adding the second strap got my scores up.
An interesting point for the GTX/Ultra owners but the GT/GTS only has one SLI connector.

Quote Originally Posted by x-built-Stan
I do recall that I also had trouble getting the SLI mode enabled in the nVidia control panel after I had made some hardware changes. I had to set the SLI mode, reboot, and then re-install the video drivers. You might want to try that also.
When I ran the benchmarks I had the SLI indicators visible and they looked normal suggesting SLI was enabled correctly. The difference I have seen does appear to be a lot larger than others have which suggests something else was having an effect.